CH209552A - Process for the preparation of a new derivative of an azo dye. - Google Patents

Process for the preparation of a new derivative of an azo dye.

Info

Publication number
CH209552A
CH209552A CH209552DA CH209552A CH 209552 A CH209552 A CH 209552A CH 209552D A CH209552D A CH 209552DA CH 209552 A CH209552 A CH 209552A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
new derivative
dye
new
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH209552A publication Critical patent/CH209552A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/12—Preparation of azo dyes from other azo compounds by acylation of amino groups

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 205164.    Verfahren zur Herstellung eines neuen Derivates eines     Azofarbstoffes.       Es wurde gefunden, dass man ein neues  Derivat eines     Azofarbstoffes    erhält, wenn man  1     Mol    des     Monoazofarbstoffes,    der erhalten  wird durch Vereinigen eines Moleküls des       1,3-Diaminobenzols    mit 1     Mol    der dianotierten       2-Aminonaphtbalin-6,8-        disulforrsäure,    mit 2       Mol        Essigsäureanhydrid    in Gegenwart einer  tertiären Base     acyliert.     



  Der treue     Farbstoff    stellt ein orangerotes  Pulver dar und färbt Wolle in echten gelben  Tönen.  



  <I>Beispiel:</I>  1 Teil des     Monoazofarbstoffes,    der erhal  ten wird durch Vereinigen von     1,3-Diamino-          benzol    mit der dianotierten     2-Aminonaph-          tlralirr-6,8-disulfonsäure,    wird in 6 Teilen       Pyridin    suspendiert und bei 40  mit 1,4  Teilen     Essigsäureanhydrid    versetzt. Man er  wärmt allmählich auf<B>900</B> und hält diese    Temperatur 1r/2 Stunden. Nach dieser Zeit  wird das Kondensationsprodukt abgeschieden  und getrocknet.



  <B> Additional patent </B> to main patent no. 205164. Process for the preparation of a new derivative of an azo dye. It has been found that a new derivative of an azo dye is obtained when 1 mole of the monoazo dye, which is obtained by combining a molecule of 1,3-diaminobenzene with 1 mole of dianotated 2-aminonaphthalene-6,8-disulforric acid, with 2 Acylated mole of acetic anhydride in the presence of a tertiary base.



  The faithful dye is an orange-red powder and dyes wool in real yellow tones.



  <I> Example: </I> 1 part of the monoazo dye, which is obtained by combining 1,3-diamino benzene with the dianotated 2-aminonaphthalir-6,8-disulphonic acid, is suspended in 6 parts of pyridine and at 40 with 1.4 parts of acetic anhydride. It is gradually heated to <B> 900 </B> and held at this temperature for 1 1/2 hours. After this time, the condensation product is separated out and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Derivates eines Azofarbstoffes, dadurch ge kennzeichnet, dass man 1 Mol des Monoazo- farbstoffes, der erhalten wird durch Vereini gen eines Moleküls des 1,3-Diaminobenzols mit 1 Mol der dianotierten 2-Aminonaph- thalin-6,8-disulfonsäure, mit 2 Mol Essig säureanhydrid in Gegenwart einer tertiären Base acyliert. Der neue Farbstoff stellt ein orangerotes Pulver dar und färbt Wolle in echten gelben Tönen. Claim: a process for the preparation of a new derivative of an azo dye, characterized in that 1 mol of the monoazo dye which is obtained by combining a molecule of 1,3-diaminobenzene with 1 mol of the dianotated 2-aminonaphthalene-6 , 8-disulfonic acid, acylated with 2 moles of acetic anhydride in the presence of a tertiary base. The new dye is an orange-red powder and dyes wool in real yellow tones.
CH209552D 1937-01-26 1937-01-26 Process for the preparation of a new derivative of an azo dye. CH209552A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH209552T 1937-01-26
CH205164T 1939-02-01

Publications (1)

Publication Number Publication Date
CH209552A true CH209552A (en) 1940-04-15

Family

ID=25724139

Family Applications (1)

Application Number Title Priority Date Filing Date
CH209552D CH209552A (en) 1937-01-26 1937-01-26 Process for the preparation of a new derivative of an azo dye.

Country Status (1)

Country Link
CH (1) CH209552A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040024A (en) * 1957-03-07 1962-06-19 Ciba Ltd Azo-dyestuffs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040024A (en) * 1957-03-07 1962-06-19 Ciba Ltd Azo-dyestuffs

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